<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png"
             alt="">
      </div>

      <!-- 登录表单区域 -->
      <el-form ref="loginFormRef"
               :model="loginForm"
               :rules="loginFormRules"
               label-width="0px"
               class="login_form">
        <el-form-item prop="username">
          <!-- 用户名 -->
          <el-input v-model="loginForm.username"
                    prefix-icon="iconfont icon-user">
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <!-- 密码 -->
          <el-input v-model="loginForm.password"
                    type="password"
                    prefix-icon="iconfont icon-password">
          </el-input>
        </el-form-item>
        <el-form-item class="btns">
          <!-- 按钮区域 -->
          <el-button type="primary"
                     @click="login">登录</el-button>
          <el-button type="info"
                     @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 这是登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 这是表单的验证规则
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 点击重置按钮，重置登录表单 
    resetLoginForm() {
      // console.log(this)
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      this.$refs.loginFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return;
        const { data: res } = await this.$http.post('login', this.loginForm)
        console.log(res)
        if (res.meta.status !== 200) return this.$message.error('登录失败，请重新操作！')
        this.$message.success('登录成功啦！')

        // 保存后台返回的data中的token
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')

      })
    }
  },
}
</script>

<style lang="less" scoped>
.login_container {
  height: 100%;
  background-color: #373d41;
}
.login_box {
  width: 500px;
  height: 350px;
  background: #fff;
  border-radius: 10px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.avatar_box {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  border: 1px #eee solid;
  padding: 10px;
  box-shadow: 0 0 10px #eee; // 添加盒子阴影
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
  background-color: #fff;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
